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9D

Dual Check Valves with Intermediate Atmospheric Vent

  • Primary check valve has rubber disc seating against a mating rubber part to ensure tight closing
  • Stainless steel internal parts for longevity
  • Can be installed vertically or horizontally
  • Line-sized construction enables check modules to open further, helping to reduce check fouling

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 9D

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA